The metamagic Twin is broken for those reasons.
According to the rules I can twin Haste, casting two leveled spells in one round, doubling the output of two martials, while concentrating on the 2 spells simultaneously.
I can twin Disintegrate and do 50-100 damage on two targets.
The metamagic twin is broken even with strictly applied D&D rules.
For the wild magic sorcerers, I think this evens out with the risk of triggering a wild magic surge and accidentally setting everyone and everything in close proximity ablaze 😄
Yay for sorcerer!🎉

Yay 🎉!
(I hope we'll get the potted plant and the unicorn for the wild magic surge)
Icelyn and Tuco

That's cute!